Fix journal redirect on systems without journal

[jkonecny12]

We redirect all the error messages from stderr to journal in the main Anaconda process. This is mainly covering errors and warnings from GTK UI.

However, this code returns FileNotFound on systems which don't have journal enabled.

To fix this move this code under our existing logic for logging to journal which is enabled only on HW installations.

[jkonecny12]

/kickstart-test --testtype smoke

[KKoukiou]

I don't get on which kind of system does this crash. And also how did it work on RHEL and breaking on Fedora tests.

[jkonecny12]

This will fail in for example container. Container don't have any systemd running or journaling enabled. The reason why we are hitting it here is that in the OpenQA test they are running --no-virt livemedia-creator which will run Anaconda on the running system directly. That means if the system doesn't have journaling (container but maybe even other solution like mock?) it will fail because there is no journal log.

On RHEL, I guess the build is happening on VM directly (which was booted by standard way) or maybe without the --no-virt option. The same reason is probably true for standard ISO builds on FEDORA which to my understanding are working. This is about how OpenQA is building the Live ISO.

[M4rtinK]

Looking good, thanks! :)

[KKoukiou]

Unit tests failures are known. Will be fixed by a blivet combined release - expected to happen today.